Arnold Schwarzenegger has said he feels "fantastic" after undergoing heart surgery at the Cleveland Clinic in Ohio.

The Press Association reports that the 73-year-old actor has received a new aortic valve, having previously undergone replacement pulmonary valve surgery in March 2018.

He shared photos with fans of him giving the thumbs up from his hospital bed and his sightseeing in Cleveland as he continued his recovery.

"I feel fantastic and have already been walking the streets of Cleveland enjoying your amazing statues," he wrote. "Thank you to every doc and nurse on my team!"

Schwarzenegger's March 2018 surgery was to replace a pulmonary valve that had previously been installed for a congenital heart defect in 1997.

The former Governor of California discussed his 2018 surgery in an online graduation video in May, telling the students he could have died.

"The reason why I'm telling you all this is because no matter how successful you are, life will throw obstacles in your path, like it was with my heart surgery or your graduation now," he said.

"But if you have a very clear vision like I talked about earlier, of exactly what you want to do and who you want to be, you can go and find a way around all of these obstacles."

He added: "That's what life is all about, overcoming obstacles."

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